.sou{
    width: 80%;
    margin-left: 5%;
    height: 40px;
    border-radius: 10px;
    margin-top: 20px;
    background-color: #f5f7fc;
    border: none;
    padding-left: 30px;
    margin-bottom: 20px;
}
.typeface{
    text-align: center;
    line-height: 40px;
}